. >> reporter: romney appeared in pennsylvania this evening. it's unclear if going to the state that hasn't gone republican in a presidential race for almost a quarter century was a bold sign of confidence that he's getting ahead of a romney wave, david, or a desperate attempt to find a path to the presidency that does not include this state that you and i are both in, ohio. david? >> jake tapper here in ohio with me tonight. jake and i have been crisscrossing each other, covering both of these campaigns. with the race this close tonight, it will all come down to which campaign can get the vote out. in one cleveland suburb today, we discovered that dueling campaigns can watch each other from across the street. we're here at the obama-biden field office in one of the sub burrs surrounding cleveland, aus just to give you an idea of how crucial these votes are in the suburbs, how competitive both campaigns are, i wanted to show you how long it would take us to get from the obama field office to the romney field office. we literally drove down the